<template>
  <div class="container">
    <!-- 路径导航区域 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>内容管理</el-breadcrumb-item>
      <el-breadcrumb-item>课程分类管理</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 搜索区域 -->
    <el-row>
      <el-form :inline="true">
        <el-form-item label="课程分类名称">
          <el-input v-model="queryInfo.name" clearable @clear="queryList" placeholder="请输入课程分类名称"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" icon="el-icon-search" @click="queryList">搜索</el-button>
          <el-button type="success" icon="el-icon-plus" @click="addCoursetype">新增课程分类</el-button>
        </el-form-item>
      </el-form>
    </el-row>



    <!-- 表格区域 -->
    <el-table :data="courseTypeList" border style="width: 70%" :header-cell-style="{'text-align':'center'}"
      :cell-style="{'text-align':'center'}">
      <el-table-column width="100px" prop="id" label="ID" />
      <el-table-column prop="name" label="课程分类名称">
        <template slot-scope="scope">
          <el-tag type="">{{ scope.row.name }}</el-tag>
        </template>
      </el-table-column>
      <el-table-column label="操作">
        <template #default="scope">
          <el-button icon="el-icon-edit" size="mini" type="primary" @click="updateCoursetype(scope.row)">编辑</el-button>
          <el-button icon="el-icon-delete" type="danger" size="mini"
            @click="deleteCoursetype(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页区域 -->
    <el-pagination background @size-change="handleSizeChange" @current-change="handleCurrentChange"
      :current-page="queryInfo.pageNum" :page-sizes="[1, 5, 10, 15, 20]" :page-size="queryInfo.pageSize"
      layout="total, sizes, prev, pager, next, jumper" :total="total">
    </el-pagination>

    <!-- 新增和修改的对话框 -->
    <el-dialog :title="title" :visible.sync="dialogFormVisible" @close="cancle">
      <el-form :model="courseType">
        <el-form-item label="课程分类名称" label-width="100px">
          <el-input placeholder="请输入课程分类名称" v-model="courseType.name"></el-input>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="cancle">取 消</el-button>
        <el-button type="primary" @click="add">确 定</el-button>
      </div>
    </el-dialog>
  </div>
</template>


<script>
import { url } from '@/util/tools.js'
export default {
  data() {
    return {
      // 查询信息对象
      queryInfo: {
        name: '',
        pageNum: 1,
        pageSize: 5
      },
      total: 0,
      courseTypeList: [],
      title: '', // 对话框标题
      dialogFormVisible: false, // 是否显示对话框
      courseType:{
          id : '',
          name : ''
      },
      dialogVisible: false,
      dialogImageUrl: '',
    }
  },
  methods: {


    addCoursetype() {
      this.title = "新增课程分类";
      this.dialogFormVisible = true
    },


    // 添加/修改心理知识
    add() {
      if (this.title === '新增课程分类') {
        this.$http({
          method: "POST",
          url: 'coursetype/save',
          data: this.courseType
        }).then(res => {
          if (res.data.status === 200) {
            this.$message.success("添加成功")
            this.courseTypeIsNull()
            this.dialogFormVisible = false
            this.queryList()
          } else {
            this.$message.error("添加失败")
          }
        })
      } else if (this.title === '更新课程分类') {
        this.$http({
          method: "PUT",
          url: 'coursetype/update',
          data: this.courseType
        }).then(res => {
          if (res.data.status === 200) {
            this.$message.success("更新成功")
            this.courseTypeIsNull()
            this.dialogFormVisible = false
            this.queryList()
          } else {
            this.$message.error("更新失败")
          }
        })
      }
    },
    cancle() {
      this.dialogFormVisible = false
      this.courseTypeIsNull()
      this.queryList()
    },





    updateCoursetype(row) {
      this.title = "更新课程分类"
      this.courseType = row
      this.dialogFormVisible = true
    },


    deleteCoursetype(id){
      this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then().then(() => {
        this.$http.delete('coursetype/delete/' + id).then((resp) => {
          if (resp.data.status == 200) {
            this.$message.success(resp.data.message);
            this.queryInfo.pageNum = 1
            this.queryList();
          } else {
            this.$message.error(resp.data.message);
          }
        })
      }) .catch(() => {
        this.$message({
          type: 'info',
          message: '已取消删除'
        })
      })
    },



    queryList() {
      if (this.queryInfo.name !== '') {
        this.queryInfo.pageNum = 1
      }
      this.$http.get('coursetype/page', {
        params: this.queryInfo
      }).then(res => {
        if (res.data.status == 200) {
          this.courseTypeList = res.data.data.list;
          this.total = res.data.data.total
          // console.log(res)
        } else {
          this.$message.error('查询失败!')
        }
      })
    },
    // 设置heartknowledge为Null
    courseTypeIsNull() {
      this.courseType = {
        "id"  : '',
        "name"  : '',
      }
    },
    handleSizeChange(size) {
      // console.log('每页显示数量发生改变');
      this.queryInfo.pageSize = size
      this.queryInfo.pageNum = 1
      this.queryList()
    },
    handleCurrentChange(num) {
      // console.log('页码发生改变');
      this.queryInfo.pageNum = num
      this.queryList()
    }
  },
  mounted() {
    this.queryList();
    // 动态的获取tool.js中的url，并赋值给当前组件的全局url
  }
}
</script>
<style>
.el-breadcrumb {
  margin-bottom: 15px;
  padding: 0 0 15px;
  border-bottom: 1px solid #ddd;
}

.el-pagination {
  margin-top: 15px;
}

.el-link {
  padding: 0 5px;
}

/**设置富文本编辑器的最小高度，注意style中不能使用scoped **/
.ql-container {
  min-height: 200px;
}
</style>
